Yale was a bit surprised by Lina's sudden hug, but he attributed it to the happiness she felt after having closed the deal.
It was normal to be happy after closing that kind of deal as long as one liked training to turn stronger, so Lina's behavior wasn't too weird from Yale's point of view.
Moreover, since both of them were used to be close to each other and were faking a relationship, Yale didn't care about it too much.
Anyway, Yale didn't dislike being hugged by Lina especially if no one saw them. After all, since they were quite friendly to each other as long no one saw them, they wouldn't feel too embarrassed.
"Sorry, I was too excited."
Lina stopped hugging Yale when she said those words, but she noticed that Yale didn't care at all, which made her happy.